# Latest **URL:** https://racket.discourse.group/latest.md?page=6 [Latest](https://racket.discourse.group/latest.md) · [Categories](https://racket.discourse.group/categories.md) · [Tags](https://racket.discourse.group/tags.md) **Page:** 7 --- ## [I'm confused by the documentation for Classes and Objects](https://racket.discourse.group/t/im-confused-by-the-documentation-for-classes-and-objects/4103)
**Author:** [@MickeyKnox](https://racket.discourse.group/u/MickeyKnox)\ **Replies:** 1\ **Last updated:** [February 6, 2026, 2:26am UTC](https://racket.discourse.group/t/im-confused-by-the-documentation-for-classes-and-objects/4103 "2026-02-06T02:26:44Z")
The documentation in the guide looks relatively straight forward: methods are defined with define/public, for example. However, when I started to read the documentation in the reference, things started falling apart for… --- ## [Using @other-doc to link to main docs.racket-lang.org package doc](https://racket.discourse.group/t/using-other-doc-to-link-to-main-docs-racket-lang-org-package-doc/4099)
**Author:** [@wilbowma](https://racket.discourse.group/u/wilbowma)\ **Replies:** 4\ **Last updated:** [February 4, 2026, 7:20pm UTC](https://racket.discourse.group/t/using-other-doc-to-link-to-main-docs-racket-lang-org-package-doc/4099 "2026-02-04T19:20:16Z")
I'm having trouble with a Scribble project that tries to link to the graph-lib documentation via @other-doc\['(lib "graph/scribblings/graph.scrbl")\], but the generated link is to the local version of this documentation, n… --- ## [Javascript module causes error in DrRacket](https://racket.discourse.group/t/javascript-module-causes-error-in-drracket/4097)
**Author:** [@nealburns5](https://racket.discourse.group/u/nealburns5)\ **Replies:** 16\ **Last updated:** [February 4, 2026, 1:16pm UTC](https://racket.discourse.group/t/javascript-module-causes-error-in-drracket/4097 "2026-02-04T13:16:32Z")
Hi, If I install the javascript module, I get the error below every time I start DrRacket. It happens in windows and linux running under WSL. Thanks, Neal Error invoking tool #\ **Author:** [@Gambiteer](https://racket.discourse.group/u/Gambiteer)\ **Replies:** 1\ **Last updated:** [February 4, 2026, 2:49am UTC](https://racket.discourse.group/t/arrays-proposal-order-of-operations-in-array-indexes-set-and-array-slice-set/4098 "2026-02-04T02:49:46Z") SRFI 231 has array-assign!, which seems similar to math/array's array-indexes-set! and array-slice-set!. I'm wondering whether the specification of array-assign! should be changed to determine the order in which element… --- ## ["virtualenv"-like installation](https://racket.discourse.group/t/virtualenv-like-installation/4089)
**Author:** [@pavpanchekha](https://racket.discourse.group/u/pavpanchekha)\ **Replies:** 6\ **Last updated:** [February 3, 2026, 4:00pm UTC](https://racket.discourse.group/t/virtualenv-like-installation/4089 "2026-02-03T16:00:21Z")
I have multiple repos on my computer that require different / incompatible versions of a library. (Because I develop both the clients and the library and sometimes need to make coordinated changes.) It's a pain to switch… --- ## [Happy birthday Racket](https://racket.discourse.group/t/happy-birthday-racket/4092)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 1\ **Last updated:** [February 2, 2026, 4:43am UTC](https://racket.discourse.group/t/happy-birthday-racket/4092 "2026-02-02T04:43:26Z")
I should thank the people who started the Racket project, the many contributors, and the incredibly patient people who have answered my dumb questions for years​:heart: thank you all Stephen :beetle: --- ## [Continuations issue - Shift vs Control](https://racket.discourse.group/t/continuations-issue-shift-vs-control/4083)
**Author:** [@matteo-daddio](https://racket.discourse.group/u/matteo-daddio)\ **Replies:** 4\ **Last updated:** [January 31, 2026, 12:40pm UTC](https://racket.discourse.group/t/continuations-issue-shift-vs-control/4083 "2026-01-31T12:40:51Z")
Hello, I need to work with continuations. I read the documentation about it and is very well written. Only the documentation about the racket/control library is a bit cryptic. I needed to ask the AI for help and I think… --- ## [Call for Participation: BOB 2026 (Berlin, Mar 13)](https://racket.discourse.group/t/call-for-participation-bob-2026-berlin-mar-13/4047)
**Author:** [@mike](https://racket.discourse.group/u/mike)\ **Replies:** 2\ **Last updated:** [January 30, 2026, 4:04pm UTC](https://racket.discourse.group/t/call-for-participation-bob-2026-berlin-mar-13/4047 "2026-01-30T16:04:29Z")
"What happens when we use what's best for a change?" bobkonf.de/2026/ Berlin, Mar 13 BOB conference is a place for developers, architects, and decision-makers to explore technologies beyond the mainstream in software… --- ## [WeScheme errors, DrRacket happy](https://racket.discourse.group/t/wescheme-errors-drracket-happy/4094)
**Author:** [@maueroats](https://racket.discourse.group/u/maueroats)\ **Replies:** 4\ **Last updated:** [January 29, 2026, 5:03pm UTC](https://racket.discourse.group/t/wescheme-errors-drracket-happy/4094 "2026-01-29T17:03:11Z")
Run the animation below. Slowly move the mouse into the window from the bottom near the right. Get an error. Maxmimum call stack size exceeded I can't figure out what's wrong. Can anybody see the issue? Touching this… --- ## [Dynamic combo-field% behavior - filtering choices by typed text](https://racket.discourse.group/t/dynamic-combo-field-behavior-filtering-choices-by-typed-text/4093)
**Author:** [@lannydpittman](https://racket.discourse.group/u/lannydpittman)\ **Replies:** 1\ **Last updated:** [January 28, 2026, 9:03pm UTC](https://racket.discourse.group/t/dynamic-combo-field-behavior-filtering-choices-by-typed-text/4093 "2026-01-28T21:03:13Z")
Looking for a way to implement an 'auto-complete' for combo-field%. As the user types text into the combo-field%, the callback filters non-matching text options from the list and add faded 'tab-complete' text after the… --- ## [Place of Scheme+ in the Racket documentation web site](https://racket.discourse.group/t/place-of-scheme-in-the-racket-documentation-web-site/4091)
**Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\ **Replies:** 4\ **Last updated:** [January 28, 2026, 8:38pm UTC](https://racket.discourse.group/t/place-of-scheme-in-the-racket-documentation-web-site/4091 "2026-01-28T20:38:53Z")
Hi, in the documentation of Racket web site i see that Scheme+ is mentioned in the "Miscellaneous Libraries" portion. I remember, i mentioned first Scheme+ as a library in discussion years ago, but this is an error, th… --- ## [Requesting help to translate small array program into typed racket](https://racket.discourse.group/t/requesting-help-to-translate-small-array-program-into-typed-racket/4079)
**Author:** [@Gambiteer](https://racket.discourse.group/u/Gambiteer)\ **Replies:** 10\ **Last updated:** [January 25, 2026, 6:38pm UTC](https://racket.discourse.group/t/requesting-help-to-translate-small-array-program-into-typed-racket/4079 "2026-01-25T18:38:32Z")
When I added array broadcasting to SRFI 231 here GitHub - gambiteer/srfi-231 at 231-bis I made some design decisions that differ from those in Racket's math/array and I would like to compare the implementations of the tw… --- ## [Linked lists in LIS(t)Processing languages are slower than arrays, and it's in the hardware too](https://racket.discourse.group/t/linked-lists-in-lis-t-processing-languages-are-slower-than-arrays-and-its-in-the-hardware-too/4042)
**Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\ **Replies:** 9\ **Last updated:** [January 21, 2026, 1:36am UTC](https://racket.discourse.group/t/linked-lists-in-lis-t-processing-languages-are-slower-than-arrays-and-its-in-the-hardware-too/4042 "2026-01-21T01:36:05Z")
I was working on Kokkos course that talks about data layout in memory. I searched a bit about that and i find an interesting document that say : "The memory latency of random memory accesses due to pointer chasing throu… --- ## [Color theory - generate color palettes](https://racket.discourse.group/t/color-theory-generate-color-palettes/4084)
**Author:** [@MickeyKnox](https://racket.discourse.group/u/MickeyKnox)\ **Replies:** 2\ **Last updated:** [January 17, 2026, 5:38pm UTC](https://racket.discourse.group/t/color-theory-generate-color-palettes/4084 "2026-01-17T17:38:36Z")
I've created a small tool to generate color palettes: --- ## [Testing for the v9.1 release](https://racket.discourse.group/t/testing-for-the-v9-1-release/4082)
**Author:** [@jbclements](https://racket.discourse.group/u/jbclements)\ **Replies:** 0\ **Last updated:** [January 17, 2026, 8:03am UTC](https://racket.discourse.group/t/testing-for-the-v9-1-release/4082 "2026-01-17T08:03:32Z")
Testing for the v9.1 release (using the v9.0.900 release candidate build) Search for your name on the checklist page to find relevant items, either reply when you finish an item (please indicate which item/s is/are do… --- ## [A happy path for Racket in the Collatz benchmark](https://racket.discourse.group/t/a-happy-path-for-racket-in-the-collatz-benchmark/4081)
**Author:** [@gus-massa](https://racket.discourse.group/u/gus-massa)\ **Replies:** 0\ **Last updated:** [January 16, 2026, 2:23pm UTC](https://racket.discourse.group/t/a-happy-path-for-racket-in-the-collatz-benchmark/4081 "2026-01-16T14:23:39Z")
I made a short post about making a "benchmark" published by @awiersdorf faster. The original code is nice, but it's posible to make it faster using some tricks or improving (in the future) the compiler to do the tricks f… --- ## [What happened to the polyglot package?](https://racket.discourse.group/t/what-happened-to-the-polyglot-package/4080)
**Author:** [@ToddOBryan](https://racket.discourse.group/u/ToddOBryan)\ **Replies:** 3\ **Last updated:** [January 15, 2026, 11:57pm UTC](https://racket.discourse.group/t/what-happened-to-the-polyglot-package/4080 "2026-01-15T23:57:26Z")
All links go to nothing. Did it get dropped? Also, and possibly better as another question is there a discussion group or list for Pollen? I'm making a website and want to look at old questions/best practices. --- ## [How does \_array/list work?](https://racket.discourse.group/t/how-does-array-list-work/4078)
**Author:** [@MickeyKnox](https://racket.discourse.group/u/MickeyKnox)\ **Replies:** 7\ **Last updated:** [January 15, 2026, 10:40pm UTC](https://racket.discourse.group/t/how-does-array-list-work/4078 "2026-01-15T22:40:11Z")
I have a list that I want to convert into a C array. \_array/list looks promising, as "the Racket representation is a list". But how exactly can I convert my list into a C array? --- ## [Trying to create my perfect Racket for AP CS Principles - will someone take pity?](https://racket.discourse.group/t/trying-to-create-my-perfect-racket-for-ap-cs-principles-will-someone-take-pity/4012)
**Author:** [@ToddOBryan](https://racket.discourse.group/u/ToddOBryan)\ **Replies:** 15\ **Last updated:** [January 15, 2026, 7:31am UTC](https://racket.discourse.group/t/trying-to-create-my-perfect-racket-for-ap-cs-principles-will-someone-take-pity/4012 "2026-01-15T07:31:08Z")
So, to review, I'm teaching AP CSP. About 40% of the course is supposed to cover programming and algorithms, and they publish their own pseudocode language, since the language the course is taught in is left to the instr… --- ## [Trouble with submodules](https://racket.discourse.group/t/trouble-with-submodules/4077)
**Author:** [@rvdalen](https://racket.discourse.group/u/rvdalen)\ **Replies:** 9\ **Last updated:** [January 13, 2026, 5:26pm UTC](https://racket.discourse.group/t/trouble-with-submodules/4077 "2026-01-13T17:26:28Z")
Hi, I am having some trouble with submodules. The following short program gives an error in DrRacket 9.0: #lang racket/base (require 'bar) (define (foo) "foo") (module bar racket/base (provide bar) (define (b… --- ## [Racket v9.1 branching is done!](https://racket.discourse.group/t/racket-v9-1-branching-is-done/4075)
**Author:** [@jbclements](https://racket.discourse.group/u/jbclements)\ **Replies:** 0\ **Last updated:** [January 8, 2026, 6:00am UTC](https://racket.discourse.group/t/racket-v9-1-branching-is-done/4075 "2026-01-08T06:00:42Z")
The release process for v9.1 has begun: release checkpoints have been created for all packages in the main distribution, and release branches have been created when necessary. You can go on using \`master\` branches as usu… --- ## [Merry Christmas everybody!](https://racket.discourse.group/t/merry-christmas-everybody/4055)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 1\ **Last updated:** [January 7, 2026, 4:58am UTC](https://racket.discourse.group/t/merry-christmas-everybody/4055 "2026-01-07T04:58:16Z")
http://pasterack.org/pastes/83589 --- ## [Any chance at more abstraction with \`Values\` type?](https://racket.discourse.group/t/any-chance-at-more-abstraction-with-values-type/4057)
**Author:** [@wilbowma](https://racket.discourse.group/u/wilbowma)\ **Replies:** 9\ **Last updated:** [January 5, 2026, 4:55pm UTC](https://racket.discourse.group/t/any-chance-at-more-abstraction-with-values-type/4057 "2026-01-05T16:55:54Z")
I was writing a little library that uses multiple return values, and decided to port it to Typed Racket as some of the invariants were getting fiddly. However, due to limitations in the Values, I can't type the pattern I… --- ## [Racket v9.1 release has started](https://racket.discourse.group/t/racket-v9-1-release-has-started/4073)
**Author:** [@jbclements](https://racket.discourse.group/u/jbclements)\ **Replies:** 0\ **Last updated:** [January 5, 2026, 1:53am UTC](https://racket.discourse.group/t/racket-v9-1-release-has-started/4073 "2026-01-05T01:53:16Z")
The release process for v9.1 will begin in a few days. If you have any new features that you want in and are relatively close to to being done, now is a good time to do that. Upcoming dates: - 7th: Branch day, merge w… --- ## [Arrays proposal: array broadcasting, and adding new axes](https://racket.discourse.group/t/arrays-proposal-array-broadcasting-and-adding-new-axes/3948)
**Author:** [@Gambiteer](https://racket.discourse.group/u/Gambiteer)\ **Replies:** 12\ **Last updated:** [January 4, 2026, 7:25pm UTC](https://racket.discourse.group/t/arrays-proposal-array-broadcasting-and-adding-new-axes/3948 "2026-01-04T19:25:23Z")
I didn't know whether to start a new thread for each topic, or to stick with one thread. I started a new thread, but can do the other if more appropriate. When composing this message, I didn't know how much background … --- ## [Racket meet-up: Saturday, 3 January 2026](https://racket.discourse.group/t/racket-meet-up-saturday-3-january-2026/4072)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 1\ **Last updated:** [January 3, 2026, 5:32pm UTC](https://racket.discourse.group/t/racket-meet-up-saturday-3-january-2026/4072 "2026-01-03T17:32:37Z")
Everyone is welcome to join us for the :racket: Racket meet-up: Saturday, 3 January 2026 at 18:00 UTC In your timezone: 2026-01-03T18:00:00Z (UTC). (converter). At this meet-up: Show and tell News & rumours AOB This… --- ## [为什么 raco 不能自动更新 racket？\[Why can't I update racket by raco?\]](https://racket.discourse.group/t/raco-racket-why-cant-i-update-racket-by-raco/4071)
**Author:** [@litjohn](https://racket.discourse.group/u/litjohn)\ **Replies:** 2\ **Last updated:** [January 2, 2026, 2:51am UTC](https://racket.discourse.group/t/raco-racket-why-cant-i-update-racket-by-raco/4071 "2026-01-02T02:51:06Z")
rt。很好奇。\[I'm curious about it.\] --- ## [How to achieve zero-overhead type dispatch in macros (similar to C++ templates)?](https://racket.discourse.group/t/how-to-achieve-zero-overhead-type-dispatch-in-macros-similar-to-c-templates/4070)
**Author:** [@litjohn](https://racket.discourse.group/u/litjohn)\ **Replies:** 8\ **Last updated:** [January 1, 2026, 7:27pm UTC](https://racket.discourse.group/t/how-to-achieve-zero-overhead-type-dispatch-in-macros-similar-to-c-templates/4070 "2026-01-01T19:27:44Z")
Hi everyone! This is my first post here. I've been exploring Racket macros and have a question regarding performance and types. Is there a way in Racket to achieve zero-overhead type dispatch similar to C++ templates? … --- ## [Structural navigation/editing in Rhombus/shrubbery?](https://racket.discourse.group/t/structural-navigation-editing-in-rhombus-shrubbery/4068)
**Author:** [@jgarvin](https://racket.discourse.group/u/jgarvin)\ **Replies:** 6\ **Last updated:** [December 30, 2025, 5:22pm UTC](https://racket.discourse.group/t/structural-navigation-editing-in-rhombus-shrubbery/4068 "2025-12-30T17:22:00Z")
I've been looking at the shrubbery and Rhombus specs and trying to assess how suitable they are for allowing the structural navigation/editing commands that are typically available in lisps. There are 2 big concerns I h… --- ## [Benchmarking programming languages using the Leibniz formula for calculating π](https://racket.discourse.group/t/benchmarking-programming-languages-using-the-leibniz-formula-for-calculating/4059)
**Author:** [@gus-massa](https://racket.discourse.group/u/gus-massa)\ **Replies:** 0\ **Last updated:** [December 28, 2025, 1:39am UTC](https://racket.discourse.group/t/benchmarking-programming-languages-using-the-leibniz-formula-for-calculating/4059 "2025-12-28T01:39:20Z")
After reading at Speed Comparison - Programming Languages I took a look at the Racket code to see if there is something interesting. The last line of speed-comparison/src/leibniz.rkt at master · niklas-heer/speed-compari… [Previous page](https://racket.discourse.group/latest.md?page=5) [Next page](https://racket.discourse.group/latest.md?page=7)